Powertrain
generic / SAE
P244B
Diesel Particulate Filter Differential Pressure Sensor Offset
At engine off, the DPF differential pressure sensor does not return to zero within the allowed offset window. The static offset is too large to be ignored.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 4B
Possible causes
- Sensor zero-point drift high
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–400 €
- Estimated time: 0.5–1.5 h
- Component: dpf diff pressure sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012